Shanghai, China
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Miao Y.,Shanghai JiaoTong University | Cheng H.,Shanghai JiaoTong University | Gong X.,Shanghai JiaoTong University | Wang L.,Pudong Power Supply Company | And 2 more authors.
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | Year: 2012

With the development of micro-grid technology in China, more and more power users tend to use the new power supply technology (micro-grid) to improve its power reliability. Whether the traditional connection mode of distribution network is able to suit the actual needs of micro-grid users has become a real problem that can not be avoided in network planning. With regarding to this, a distribution network planning was conducted in order to evaluate the typical connection modes more scientifically. After that, a comprehensive evaluation of various connection modes was executed to find the most appropriate connection mode for micro-grid users. In the evaluation, four indices have been considered, which are: max short-circuit current, max voltage drop, average system availability index (ASAI) and annual fee per load unit. The result of the evaluation shows that the radial connection mode is more suitable for micro-grid users when considering economical efficiency. But if the reliability has the highest priority, the switch substation with 2 sources could meet the highest reliability requirement of the important power user. © 2012 Chin. Soc. for Elec. Eng.


Sun P.,Shanghai JiaoTong University | Zhang Y.,Shanghai JiaoTong University | Luo W.,Pudong Power Supply Company
Dianwang Jishu/Power System Technology | Year: 2015

During the post-blackout network reconfiguration it is necessary to select reasonable recovery path and upbuild the backbone network as fast as possible. The indices of network coverage rate and network dispersion degree, which are used to evaluate the rate of the backbone network covering the original network of power system and the risk of appearing long branch during the reconfiguration, is proposed, and synthesizing such factors as recovery time and charging capacitances of transmission lines an optimization model of backbone network reconfiguration is built. The simplified model is used to search optimal target nodes and the improved crossed particle swarm optimization (PSO) algorithm is used to optimize the recovery sequence of target nodes, and further the optimized backbone network reconfiguration scheme is attained, in which the synchronous recovery mechanism of non-plant target nodes is considered to improve the efficiency of the recovery. The effectiveness of the proposed backbone network reconfiguration method is validated by simulation results of IEEE 30-bus system. ©, 2014, Chinese Society of Astronautics. All right reserved.


Yang Y.,Pudong Power Supply Company | Xu Y.,Shanghai Sheng Shi Xiang Hai Industrial Co.
IET Conference Publications | Year: 2013

In order to measuring the benefits of implementing demand side management (DSM) and promote the strategy of an energy-saving society in China, the author builds up a power-saving evaluation system. Focusing on lighting program and electromotor program, this evaluation system can figure out customers', suppliers' and the society's power-saving benefits by using formulas. The result of benefit analysis proves that if we implement DSM successfully, the energy efficiency can be raised so that the goal of energy saving can be reached. Therefore customers, suppliers and the whole society will all get benefits.


Wang S.,Pudong Power Supply Company | Gu C.,Shanghai University of Electric Power | Hua Y.,Pudong Power Supply Company
China International Conference on Electricity Distribution, CICED | Year: 2016

Based On The Full Investigation Abroad Micro-Grid Laboratory System And Typical Demonstration Project, Combined With Characteristics Of Micro-Grid And Energy Structure, The Paper Elaborated The Power Mode Of Micro-Grid, Proposed Typical Structure, Which Including Network Topology, Electrical Structure, The Power Supply System (Ac / Dc Power Supply And Three-Phase / Single-Phase Power Supply). Then The Paper Proposed Typical Network Scheme Of 3 Large Categories, 7 Small Types, Which Can Be Applied In Different Areas And Different External Grid. Finally, We Analysis And Applied The Typical Network Scheme By Actual Project. © 2016 IEEE.


Li C.,Pudong Power Supply Company | Zhang L.,Pudong Power Supply Company | Sheng J.,Pudong Power Supply Company | Chen D.,Pudong Power Supply Company
China International Conference on Electricity Distribution, CICED | Year: 2016

Distribution Automation is one of the most important parts of the construction of Smart Grid. And the related standards are important for Smart Grid standard system. Modern power distribution network, which has three features including network grid, multi-connecting power supply and distribution automation, will strengthen the network connection. It improves the power supply service that less time is needed to recover when breakdown happens. Radar reflection principle is used for the strategy of load-transfer among main stations of Distribution automation in Pudong area, which consists of load shedding plan, checking method of topological power flow and searching the path of power supply. Therefore, it is possible to recover from complex breakdown nearby and separately, which ensures the distribution automation system work more steadily and reliably. © 2016 IEEE.


Lun W.Y.,Pudong Power Supply Company | Zhou Z.Y.,Pudong Power Supply Company
China International Conference on Electricity Distribution, CICED | Year: 2016

Partial discharge detection technology of switch cabinet is widely applied nationwide. It is necessary to judge whether the switch cabinet is abnormal by detecting TEV and ultrasonic signals of switch cabinet at preliminary stage. It is necessary to redetect the abnormal signals with UHF detection technology to judge whether it is discharged, determine discharge type, realize positioning of partial discharge and determine the damage degree of equipment. Based on partial discharge detection case of 10kV switch cabinet of certain transformer substation, the application of UHF detection method into partial discharge detection process of switch cabinet is introduced in this paper. © 2016 IEEE.


Miao Y.,Pudong Power Supply Company
2010 China International Conference on Electricity Distribution, CICED 2010 | Year: 2010

With a series problems such as global energy and resource shortage, several countries have begun to increase investment for new energy development. Because wind energy is renewable, clean and pollution-free, it is widely used in the entire world. Offshore wind farm does not take up valuable land resources, and the sea has abundant wind energy resources so that the wind turbine can achieve greater unit capacity. Therefore, the development of offshore wind farm has become a new direction of China's Green Energy Development. In this context, the study of large-scale offshore wind farm and the impact on the power system is necessary. Based on the analysis of Shanghai Nanhui wind farm's operation, this paper discusses the interconnection of the Donghai Bridge offshore wind farm and the short-circuit capacity, power quality, as well as the reactive power. © 2010 Chinese Soc for Elec Eng.


Yao C.,Pudong Power Supply Company
2010 China International Conference on Electricity Distribution, CICED 2010 | Year: 2010

The development and implementation of this project has successfully achieved that the live working can implement on the 60∼90 degree corner unit where elevated car can reach. Power Supply Company can improve power supply reliability, and has very positive implications in electricity sales, while improving the social and economic benefits. © 2010 Chinese Soc for Elec Eng.


Yang G.,Pudong Power Supply Company | He T.,Pudong Power Supply Company
2010 China International Conference on Electricity Distribution, CICED 2010 | Year: 2010

The three-phase unbalanced load of low voltage area will do harm to the electrical equipment and will increase the technical circuit loss. In this paper, the rms current method is used to deduce relationship between unbalance degree and the rate of increase current loss of three-phase unbalanced lines, as well as the solution of increase current loss of everyday. Use the increase of current loss of the typical day to evaluate the loss of a month, finally, in order to deal mount of data, we develop an application, which is proved rationality and effectiveness. © 2010 Chinese Soc for Elec Eng.


Wu Z.,Pudong Power Supply Company
2010 China International Conference on Electricity Distribution, CICED 2010 | Year: 2010

With the rapidly increase of electric load in urban areas, the advantage of 20kV network is more obvious such as capacity of electric power supply, place of transformer substation and power supply radius. In the other hand, it is different from 10kV network in substation planning and method of operation. We need study on the equipment selection in high voltage distribution network. Through the calculation model of equipment selection, we got the most optimal selection of transformer capacity and conductor cross-section under several kinds of connection mode. The method has proved useful to the equipment selection of urban distribution networks in which 20kV is the middle voltage level. © 2010 Chinese Soc for Elec Eng.

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